Global Patent Index - EP 0899348 A1

EP 0899348 A1 19990303 - Co-tolerant platinum-zinc alloy suitable for use in a fuel cell electrode

Title (en)

Co-tolerant platinum-zinc alloy suitable for use in a fuel cell electrode

Title (de)

CO-tolerante Pt-Zn Legierung für Brennstoffzellen

Title (fr)

Catalyseur tolérant de CO pour cellule à combustible

Publication

EP 0899348 A1 19990303 (EN)

Application

EP 98115245 A 19980813

Priority

US 91227597 A 19970815

Abstract (en)

There is described a carbon-supported, dispersed platinum-zinc alloy having the formula Pt-ZnX/C, wherein x ranges from greater than 0.05 to less than 1, wherein platinum is in the form of platinum particles ranging in size from about 20 ANGSTROM to about 30 ANGSTROM on a carbon support having surface area ranging from about 100 to about 500 m<2>/g, and the platinum particles are present in an amount ranging from about 10 to about 40 wt% on the carbon support. Preparation, and use in a fuel cell assembly, are described.

IPC 1-7

C22C 5/04; B01J 23/60; H01M 4/92; H01M 8/12

IPC 8 full level

H01M 4/86 (2006.01); B01J 23/60 (2006.01); B22F 1/12 (2022.01); H01M 4/88 (2006.01); H01M 4/92 (2006.01); H01M 8/10 (2006.01)

CPC (source: EP US)

B01J 23/60 (2013.01 - EP US); B22F 1/09 (2022.01 - EP US); B22F 1/12 (2022.01 - EP US); H01M 4/921 (2013.01 - EP US); H01M 4/926 (2013.01 - EP US); B22F 2998/00 (2013.01 - EP US); H01M 8/1004 (2013.01 - EP US); H01M 2004/8684 (2013.01 - EP US); H01M 2300/0082 (2013.01 - EP US); Y02E 60/50 (2013.01 - EP)

Citation (search report)

  • [A] EP 0556535 A1 19930825 - TANAKA PRECIOUS METAL IND [JP], et al
  • [A] EP 0614698 A1 19940914 - EXXON RESEARCH ENGINEERING CO [US]
  • [A] WO 9424710 A1 19941027 - JOHNSON MATTHEY PLC [GB], et al
  • [A] EP 0329626 A1 19890823 - TANAKA PRECIOUS METAL IND [JP]
  • [A] IWASA, N. ET AL: "Dehydrogenation of methanol to methyl formate over supported Ni, Pd and Pt atalysts. Anomalous catalytic functions of PdZn and PtZn alloys", REACT. KINET. CATAL. LETT., vol. 55, no. 2, 1995, sapporo, japan, pages 245 - 250, XP002087074

Designated contracting state (EPC)

BE DE FR GB IT

DOCDB simple family (publication)

EP 0899348 A1 19990303; EP 0899348 B1 20020529; CA 2242085 A1 19990215; DE 69805579 D1 20020704; DE 69805579 T2 20021219; HK 1018630 A1 19991230; JP H11126616 A 19990511; US 5916702 A 19990629

DOCDB simple family (application)

EP 98115245 A 19980813; CA 2242085 A 19980807; DE 69805579 T 19980813; HK 99103620 A 19990821; JP 22983898 A 19980814; US 91227597 A 19970815